Newbie Question on Flyback Primary Winding

I just bought a flyback tester and have a drawer full of flybacks that
I want to test. How do I know what pins to connect it to? The
directions say to simple hook it up to the primary windings, but which
pins are these?

Thanks

 

[Jerry G.]

To know this you will really need the schematics from the
manufactures.

Remember that your tester is only doing a basic reactance test of the
device. To properly test a flyback it has to be properly driven and
loaded. Then the current pull and various voltages have to be
varified. It is not a simple process to properly test a flyback!


Jerry G.

--



troxel...@yahoo.com wrote:

I just bought a flyback tester and have a drawer full of flybacks that
I want to test. How do I know what pins to connect it to? The
directions say to simple hook it up to the primary windings, but which
pins are these?

Thanks

 

[Franc Zabkar]

On Sun, 24 Aug 2008 14:31:01 -0700 (PDT), troxelone@yahoo.com put
finger to keyboard and composed:

I just bought a flyback tester and have a drawer full of flybacks that
I want to test. How do I know what pins to connect it to? The
directions say to simple hook it up to the primary windings, but which
pins are these?

Thanks

Go here ...

http://www.hrdiemen.es/products/index.php?command=viewSection&id=4&language=eng-GB

.... and find the equivalent FBT. Then view the schematic of the
equivalent.

For example, this is the HR6214 FBT:
http://www.hrdiemen.es/products/index.php?command=viewSchema&filename=./img/esquemas/HR6214.gif

The primary winding is between pins 1 and 17.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

 

[Jerry G.]

With any of these flyback checkers they will not show high voltage
breakdown, or critical problems with the flyback. This is only a
simple test! I have been through this!

Jerry G.

--

On Aug 25, 10:38 am, "Arfa Daily" <arfa.da...@ntlworld.com> wrote:

troxel...@yahoo.com wrote:
I just bought a flyback tester and have a drawer full of flybacks that
I want to test.  How do I know what pins to connect it to?  The
directions say to simple hook it up to the primary windings, but which
pins are these?

Thanks
"Jerry G." <jerry...@hotmail.com> wrote in message

news:6d6f4f61-0db1-43a3-b809-a92e095c3ab8@t54g2000hsg.googlegroups.com...

To know this you will really need the schematics from the
manufactures.

Remember that your tester is only doing a basic reactance test of the
device ...

snip

That may not be strictly true. If it's a Bob Parker design flyback tester
(now reworked and rebranded by another company), then it actually 'rings'
the tranny, a test that shows up most common defects such as shorted turns
on the primary, and short or leaky diodes in the HV stack.

Arfa

 

[Leonard Caillouet]

"Jerry G." <jerryg50@hotmail.com> wrote in message
news:950cbe8c-5c99-441b-bc92-834665949e6a@25g2000hsx.googlegroups.com...

With any of these flyback checkers they will not show high voltage
breakdown, or critical problems with the flyback. This is only a
simple test! I have been through this!

Jerry G.

But the Sencore drive tests catch most of them. It applies a 25vp-p pulse
to the primary and you should get out 500-600vdc on most integrated
flybacks. It is far better than ringing because it tests the high voltage
rectifier, if only at a fraction of the output. It won't catch a leaky
insulator, but it will get most bad flybacks otherwise.

Leonard